A transcript track can be constructed from a TxDb object.

suppressPackageStartupMessages({
    library(TnT)
    library(GenomicFeatures)
    library(TxDb.Hsapiens.UCSC.hg19.knownGene)
})
txdb <- TxDb.Hsapiens.UCSC.hg19.knownGene

Transcript Track From TxDb

txs <- transcripts(txdb)
txtrack <- TxTrackFromTxDb(txdb, label = "Transcripts", height = 300)
TnTGenome(txtrack, txs[txs$tx_id == 4200])



Session Info

sessionInfo()
## R version 3.4.1 (2017-06-30)
## Platform: x86_64-suse-linux-gnu (64-bit)
## Running under: openSUSE Tumbleweed
## 
## Matrix products: default
## BLAS: /usr/lib64/R/lib/libRblas.so
## LAPACK: /usr/lib64/R/lib/libRlapack.so
## 
## locale:
##  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
##  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
##  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
##  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
##  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
## [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
## 
## attached base packages:
## [1] stats4    parallel  stats     graphics  grDevices utils     datasets 
## [8] methods   base     
## 
## other attached packages:
##  [1] org.Hs.eg.db_3.4.1                     
##  [2] AnnotationHub_2.8.0                    
##  [3] TxDb.Hsapiens.UCSC.hg19.knownGene_3.2.2
##  [4] EnsDb.Hsapiens.v86_2.1.0               
##  [5] ensembldb_2.0.0                        
##  [6] AnnotationFilter_1.0.0                 
##  [7] GenomicFeatures_1.28.0                 
##  [8] AnnotationDbi_1.38.0                   
##  [9] Biobase_2.36.0                         
## [10] GenomicRanges_1.28.0                   
## [11] GenomeInfoDb_1.12.0                    
## [12] IRanges_2.10.0                         
## [13] S4Vectors_0.14.3                       
## [14] BiocGenerics_0.22.0                    
## [15] TnT_0.0.0.9016                         
## [16] jsonlite_1.5                           
## [17] microbenchmark_1.4-2.1                 
## [18] magrittr_1.5                           
## 
## loaded via a namespace (and not attached):
##  [1] Rcpp_0.12.11                  lattice_0.20-35              
##  [3] Rsamtools_1.28.0              Biostrings_2.44.0            
##  [5] gtools_3.5.0                  rprojroot_1.2                
##  [7] digest_0.6.12                 mime_0.5                     
##  [9] R6_2.2.2                      plyr_1.8.4                   
## [11] backports_1.0.5               RSQLite_1.1-2                
## [13] evaluate_0.10                 BiocInstaller_1.26.0         
## [15] httr_1.2.1                    ggplot2_2.2.1                
## [17] gplots_3.0.1                  zlibbioc_1.22.0              
## [19] rlang_0.1.1                   curl_2.5                     
## [21] lazyeval_0.2.0                data.table_1.10.4            
## [23] gdata_2.18.0                  Matrix_1.2-10                
## [25] rmarkdown_1.5                 BiocParallel_1.10.0          
## [27] stringr_1.2.0                 ProtGenerics_1.8.0           
## [29] htmlwidgets_0.8               RCurl_1.95-4.8               
## [31] biomaRt_2.32.0                munsell_0.4.3                
## [33] shiny_1.0.3                   DelayedArray_0.2.0           
## [35] compiler_3.4.1                httpuv_1.3.3                 
## [37] rtracklayer_1.36.0            htmltools_0.3.6              
## [39] SummarizedExperiment_1.6.0    tibble_1.3.3                 
## [41] GenomeInfoDbData_0.99.0       interactiveDisplayBase_1.14.0
## [43] matrixStats_0.52.2            XML_3.98-1.6                 
## [45] GenomicAlignments_1.12.0      bitops_1.0-6                 
## [47] grid_3.4.1                    ulimit_0.0-3                 
## [49] xtable_1.8-2                  gtable_0.2.0                 
## [51] DBI_0.7                       scales_0.4.1                 
## [53] KernSmooth_2.23-15            stringi_1.1.5                
## [55] XVector_0.16.0                tools_3.4.1                  
## [57] yaml_2.1.14                   colorspace_1.3-2             
## [59] caTools_1.17.1                memoise_1.1.0                
## [61] knitr_1.15.1